Multi-tone whistle

Abstract

A simple toy whistle includes a mouthpiece and multiple resonant chambers. In order to permit single notes to be played by one resonant chamber, while preventing the other chambers from producing audible tones when the whistle is played, each such chamber is provided an additional opening. This opening is provided with an annular boss so that it can be sealed by the pad of the user's thumb or finger when the corresponding chamber is to resonate.

I claim: 
     
       1. A whistle capable of selectively producing more than one tone comprising a plurality of resonant chambers, a mouthpiece, said plurality of resonant chambers connected to said mouthpiece, said mouthpiece having an air receiving opening and a second opening arranged relative to said mouthpiece such that when the user blows through air receiving opening, the air in said resonating chambers can be caused to produce an audible tone, a single hole in each said chambers positioned such that each said hole can be selectively closed by a digit of the user, said chambers being sized such that when a hole in a chamber is not closed and the user blows so as to normally to cause said chamber to produce said audible tone, the chamber will not produce said audible tone, but when the hole in a chamber is closed, that chamber can produce said audible tone. 
     
     
       2. A whistle as is claim 1 wherein said whistle is constructed of two molded pieces, each piece having an end defining one portion of the mouthpiece, a wall defining portion, and edge portions sized for mutual engagement with the edge portions of the other of the pieces, such that when so engaged, said wall defining portions and said edge portions form said plurality of of chambers. 
     
     
       3. A whistle as is claim 2 wherein a first of said molded pieces inculdes said holes, and a second of said pieces includes said second opening. 
     
     
       4. A whistle as in claim 1 or claim 3 wherein each said chamber has a longitudinal dimension and each said hole includes an annular raised portion at the edge of the hole at the intersection of said hole and an outside surface of said whistle, said hole being spaced from the next adjacent hole in the next chamber at a distance along said longitudinal dimension of said chamber, whereby to aid the user thereof to seal said hole by pressing the pad of the users digit against said raised portion to thus seal said hole and permit said chamber into which said hole penetrates to produce said audible tone. 
     
     
       5. A whistle as in claim 1 wherein each said chamber has a different volume, whereby when said whistle is operated, each of said chambers is capable of resonating at a different audible tone. 
     
     
       6. A whistle as in claim 5 wherein each said chamber is of a different length and are parallel to one another, and the hole in each respective chamber is positioned toward an end of the chamber furthest away from said mouthpiece such that the holes are spaced both laterally and longitudinally from one another to place each hole from one another a greater distance than would occur if the holes were arranged at the same position along the chambers. 
     
     
       7. A whistle as in claim 6 wherein said first and second openings in said mouthpiece extend perpendicular to the length of said chambers to span each said chamber and pneumatically interconnect said chambers.